Former Storm Water Detention Ponds Sediment/Soil Removal

In August 2000 the Oregon Department of Environmental Quality investigated potential contamination at the Oakridge Industrial Park in Lane County. Chemicals detected in sediment included metals, polychlorinated biphenyls and dioxins. The DEQ found that the concentrations of several chemicals in the sediment/soil were above human health safety levels. Also, some of the chemicals identified are known to accumulate in fish. The inactive former ponds are fenced. The area is targeted for high-density residential development in the future.

The remedial action for the former storm water detention ponds will be the removal and disposal of the contaminated sediment/soil and potentially contaminated asphalt underlayment. If sampling results indicate contaminants remain in soil beneath the asphalt at concentrations above cleanup goals, then additional soil will be removed. Removed sediment and soil will be transported to the Riverbend Landfill in Milwaukie.

The selected contractor will be notified on Nov. 15 and the project is scheduled to be completed before Dec. 2.

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